<!DOCTYPE html>
<html lang="zh-CN">
	<head>
		<meta charset="UTF-8" />
		<meta name="viewport" content="width=device-width, initial-scale=1.0" />
		<title>Document</title>
		<style>
			* {
				margin: 0;
				padding: 0;
			}

			.box {
				width: 200px;
				height: 200px;
				border: 10px solid black;
				background: #f00;
				position: absolute;
				left: 50%;
				top: 50%;
			}
		</style>
	</head>
	<body>
		<div class="box"></div>

		<script>
			const box = document.querySelector('.box')
			console.log(box.getBoundingClientRect())
		</script>
	</body>
</html>
